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Finding the Fourth Proportional to 208,099.03, 287,144.17 and 118,657.75

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Solution

The fourth proportional to 208,099.03, 287,144.17 and 118,657.75 is: 163,729.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,099.03 : 287,144.17 = 118,657.75 : x
  2. Step 2: Convert to fraction form
    208,099.03/287,144.17 = 118,657.75/x
  3. Step 3: Cross multiply
    208,099.03x = 287,144.17 × 118,657.75
  4. Step 4: Simplify right side
    208,099.03x = 34,071,881,137.82
  5. Step 5: Solve for x
    x = 34,071,881,137.82/208,099.03
  6. Step 6: Final answer
    x = 163,729.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.